Synthesis and characterization of 3,4-di(3-phenoxy-4-fluoro phenyl)-2,5-diphenyl phenyl grafted polysiloxane as stationary phase for gas chromatography

doi:10.3724/SP.J.1123.2016.07026

Abstract

Abstract:

A new high-temperature stationary phase called 3,4-di(3-phenoxy-4-fluoro phenyl)-2,5-diphenyl phenyl grafted polysiloxane (DPFP) was synthesized and statically coated on fused-silica capillary columns. The chromatogram of the polyethylene pyrolysis products showed that the DPFP column still owned good separation ability until 360℃. The column efficiency of the DPFP was 3324 plates/m (retention factor (k)=4.24, naphthalene, 0.25 mm i. d.). McReynolds constants revealed that the polarity of the stationary phase was moderate. Abraham system constants indicated that DPFP possessed strong dipole-induced dipole interactions and H-bond acceptance with analytes. Analysis of Grob test mixtures showed good selectivity of DPFP and inner-surface inertness of the column. Furthermore, the aromatic isomers, substituted benzenes, polycyclic aromatic hydrocarbons, and fatty acid esters could be well separated on the column, thereby indicating that DPFP had great potential for application.

Key words: gas chromatography (GC), polysiloxanes, selectivity, stationary phases, thermal stability

CLC Number:

O658

WANG Huan, HAN Xue, HE Xinxin, WANG Bing, WU Bo. Synthesis and characterization of 3,4-di(3-phenoxy-4-fluoro phenyl)-2,5-diphenyl phenyl grafted polysiloxane as stationary phase for gas chromatography[J]. Chinese Journal of Chromatography, 2017, 35(4): 388-397.

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